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This study was conducted to determine the polymorphisms of the  POU1F1  gene and their relationships with milk yield and components, litter size, birth weight, and weaning weight in goats. For this purpose, a total of 108 Saanen goats from two different farms (Bornova and Manisa) were used as animal materials. Polymorphisms at the exon 6 and the 3′flanking region of the  POU1F1  gene were determined by using PCR-RFLP with  Pst I and  Alu I restriction enzymes and DNA sequencing analyses. Two alleles and three genotypes were identified by  Alu I or  Pst I digestions of the  POU1F1  gene. The genotypes frequencies of TT, TC, and CC were 64.8 %, 31.5 % and 3.7 % for the  Pst I locus; 54.6 %, 31.5 % and 13.9 % for the  Alu I locus, respectively. T allele frequencies (0.56 and 0.88 for the  Alu I locus, 0.80 and 0.81 for the  Pst I locus, respectively) were predominant in both loci at the Bornova and Manisa farms. In terms of  POU1F1 - Alu I and  POU1F1 - Pst I loci, two populations were found to be in Hardy–Weinberg equilibrium. In the  POU1F1 - Alu I locus, significant associations were found between genotypes and lactation milk yield and litter size. Similarly, a significant relationship between genotypes and birth weight in the  POU1F1 - Pst I locus (    p  <  0.05    ) was determined. The TC and CC genotypes were observed to be higher than the TT genotype for lactation milk yield and litter size at the  POU1F1 - Alu I locus. Birth weight was found to be higher in animals that have the CC genotype at the  POU1F1 - Pst I locus. In conclusion, the  POU1F1  gene can be used as a molecular marker for economic features like reproduction, growth, milk content and yield in Saanen goats.

Associations between genetic variants of the &lt;i&gt;POU1F1&lt;/i&gt; gene and production traits in Saanen goats

Associations between genetic variants of the <i>POU1F1</i> gene and production traits in Saanen goats